Morse code was first used to communicate more than 160 years ago when it was created and adapted to use as a simple, quick, and straightforward way of communicating over the telegraph. All this for the purpose of being able to communicate (though limited) over long distances, practically instantly. Also known as CW, is the language of the telegraph, which relays communications through the combination of electronic sound. In the case of Morse code, two sounds (known as dits and dahs) are used in different combinations to represent each letter of the roman alphabet. When written, the dits and dahs, short and long sounds, are signified by dots and dashes. One huge advantage to CW is that it can be used to communicate and interpreted through many different mediums by using sound, touch, and light, enabling long-distance or even silent communication. The only requirement: the pattern of dits and dahs is kept constant, over the years, distances, and mediums used.
While many people think dits and dahs are practically an ancient way of communicating, in reality there are still many people in this modern time who learn and know CW. And some of those people have brought up the idea of incorporating Morse code into the modern and heavily used technology of cell phones.
One of the first ideas that comes to mind, that would be the most universal in usage for those who both learn and know Morse code, is by turning the audio use of dits and dahs into a ringtone. There are currently websites available that have mp3 format audio files of individualized dits and dahs with thousands of common names and other everyday contact list entries (such as "home", "work", "school", etc). Or, combine any three characters to make up an "audio monogram", as it were. This "audio monogram" would be most effect for those who learn Morse code who have multiple friends with the same name. Learn Morse code to use a very sophisticated from of caller id.
Other reasons to learn Morse code and then apply that knowledge to your cell phone can extend to the other various alerts phones give off besides incoming call ringtones. Audio dits and dahs could also be used to let an cell phone owner know they have a new voicemail, text message, or something on their calendar.
As mentioned before, because Morse code can also be communicated through touch, all the afore-mentioned uses of audio dits and dahs on a cell phone can also be extended to the vibrating ringtone phone profile. Where a normal cell phone is much more limited on the vibrating setting than on the normal ringtone setting, by using Morse code, the vibrating profile setting would not limit what is trying to be communicated to the owner.
What better way to learn Morse code than through a medium most people use multiple times a day. As the old saying goes "practice, practice, practice", and turning a cell phone, something that is so heavily used and relied upon by many people, into a means of practice is a brilliant idea.